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Viewing changes to drizzled/check_stack_overrun.cc

  • Committer: Andrew Hutchings
  • Date: 2011-01-21 11:23:19 UTC
  • mto: (2100.1.1 build)
  • mto: This revision was merged to the branch mainline in revision 2101.
  • Revision ID: andrew@linuxjedi.co.uk-20110121112319-nj1cvg0yt3nnf2rr
https://launchpad.net/bugs/705771
Add errors page to drizzle client docs
Add link to specific error in migration docs
Minor changes to migration docs

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drizzled/check_stack_overrun.cc
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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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 *
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 *  Copyright (C) 2008 Sun Microsystems
 
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 *  Copyright (C) 2008 Sun Microsystems, Inc.
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 *
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 *  This program is free software; you can redistribute it and/or modify
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 *  it under the terms of the GNU General Public License as published by
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        Check stack size; Send error if there isn't enough stack to continue
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****************************************************************************/
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#if defined(STACK_DIRECTION) && (STACK_DIRECTION < 0)
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#define used_stack(A,B) (long) (A - B)
 
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static const bool stack_direction_negative = true;
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#else
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#define used_stack(A,B) (long) (B - A)
 
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static const bool stack_direction_negative = false;
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#endif
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template <typename A_T, typename B_T>
 
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inline static long used_stack(A_T A, B_T B)
 
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{
 
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  if (stack_direction_negative)
 
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    return (long) (A - B);
 
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  else
 
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    return (long) (B - A);
 
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}
 
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extern size_t my_thread_stack_size;
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bool check_stack_overrun(Session *session, long margin, void *)
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{
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  long stack_used;
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  assert(session == current_session);
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  if ((stack_used=used_stack(session->thread_stack,(char*) &stack_used)) >=
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      (long) (my_thread_stack_size - margin))
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  {